Fixes a bunch of clippy warnings, adds clippy to CI

src/dynamic_data/flow/turn_runner.rs

@@ -75,11 +75,11 @@ impl<'own, 'library> Battle<'own, 'library> {
                 return Ok(());
             }
         }
-        if !self.can_use(&choice) {
+        if !self.can_use(choice) {
             return Ok(());
         }
         match choice {
-            TurnChoice::Move(..) => self.execute_move_choice(&choice)?,
+            TurnChoice::Move(..) => self.execute_move_choice(choice)?,
             TurnChoice::Item(_) => {}
             TurnChoice::Switch(_) => {}
             TurnChoice::Flee(_) => {}